Shade-roller



W. C. FISCHER. SHADE ROLLER- APPLICATION FILED SEPT. 13. 1919.

Patented Oct. 12, 1920.

ilcm/ 0 INVENTOR,

' ,4 TTORNEYS.

UNITED STATES PATENT OFFICE.

WILLIAM G. FISCHER, or NEWARK, NEW JERSEY.

SHADE-ROLLER.

T 0 all whom it may concern Be it known that I, WILLIAM G. Frscnnu, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Shade-Rollers, of which the following is a specification.

This invention relates to spring rollers for window shades, and its objects are to cheap-en the construction of these devices and render them more durable and eflicient.

In the accompanying drawings, fully illustrating the invention,

Figure l is a side elevation of the improved shade roller;

Figs. 2 and 3 are views showing the barrel of the roller in longitudinal section so as to reveal the internal mechanism at the fixed-trunnion end of the shade roller, Fig. 2 showing the spindle projecting and engaged in, and Fig. 8 showing said spindle retracted and withdrawn from, the adjoining shade roller bracket, which also appears in section;

Fig. 4 is an elevation of the end of the shade roller appearing in Figs. Q'and 3, with the pawls and their mounting and cap therefor removed;

Fig. 5 is a longitudinal sectional view of the end of the barrel and said mounting and the cap, the latter being detached;

Fig. 6 is an end elevation, the spindle appearing in section;

Fig. 7 is a plan of said mounting and the pawls;

Fig. 8 is a sectional view of the rotatingtrunnion end of. the shade roller; and

Fig. 9 shows in elevation. the bracket, appearing in Figs. 2 and 3, with the spindle engaged therein.

In the drawings, a is the barrel of the improved shade roller, which I prefer to form of a suitable length of paper or other cheap compressed fibrous tubing cut off to the proper length, said material being light, strong and considerably less expensive than wood ordinarily used. Over one end of this barrel is fitted the usual cap 6 having the rotating spindle 0 adapted to turn in a suitable bracket, not shown. To the other end of the barrel (1 is S6"11IGl a mounting of well-known form, consisting of a disk Z having tangs engaged in the end of the barrel and a central bearing opening f, the same having pivoted therein the pawls g Specification of Letters Patent. Patented Oct. 12 1920 Application filed se temteris, 1919.

Serial No. 323,489.

and also having pawl stops it. 2' is an apertured cap which in the usual manner fits over said end of the barrel and more or less covers the mounting (Z and the pawls, it being adapted to be clenched and thus secured to the barrel in any well-known way.

To form the aforesaid spindle I take a length of heavy wire and near one end provide a rebend j therein, the portions of the wire being preferably spread apart at a point suitably short of the end of the rebend, as at 70, to form a shoulder, and more or less near the middle of the length of the wire I bend it back on itself and form a loop Zof suitable length, with preferably straight sides, the portions m a of the wire between such loop and the end portion thereof which has been rebent to form the rebend j being straight, parallel witheach other, and lying each close to the longitudinal central axis of the loop Z-and rebend The form of the wire as thus described, is clearly shown in Figs. 2 and 8.

The spindle thus formed has its rebend' j journaled in the bearing opening f of the mounting d, said spindle projecting into the barrel and its loop being of such transverse dimension as more or less closely to fit the interior thereof and form a bearing therefor.

0 is a torsion spring which is inclosed in the barrel and has one end suitably hooked around the wire of the spindle, as at 79, and the other end bent ofi 'and engaged in a notch 9 (Figs. 4- and 5) at the end of the barrel. The spring normally tends to thrust the spindle outwardly of the barrel, its shoulder 72 by engaging the mounting (Z and: shown in Fig; 2 limiting the outward movement. The rebend j forms not only the fixed trunnion of the shade roller but the ratchet which coacts with the pawls 9. See Fig. 6. It will be observed that the spindle may be moved lengthwise, against the tension of the spring, into the barrel (compare Figs. 2 and 8), wherefore, instead of using 35 Y spindle extending into said tubular portion and formedof a length of wire having its outer end portion rebent and the rebent part shifting the shade roller until the spindle is alined with the hole, whereupon it will spring into place. a

The member formingthe parts j, Z, m, n obviously considerably simplifies the construction of spring shade rollers, the usual expedient comprising several parts to form the fixed-trunnion, the ratchet, a spindle and means to properly center its inner end. Ordinarily, the spring is'anchored in some way at its inner end tothe'barrel and at its outer end to the trunnion; by anchoring the spring at its inner end to the aforesaid member and at its outer end to the barrel there is a .further contribution to simplicity of construction, and the assembling and disassembling are rendered more facile. J

I do not wish to be limited to the details herein set forth, excepting as indicated in the following which sets forth what I claim. 1. In combination, the barrelhaving one end portion tubular, a pawl and a mountingtherefor on the end of said portion, a spindle extending into said tubular portion and formed of a length of wire having its outer end portion rebent and the rebentpart forming the fixed trunnion of the shade roller,

said end portion of the wire also having a ratchet to coact with the pawl, and a torsion spring in said end portion of the barrel connected at its end portions to the spindle and barrel.

2. In combination, the barrel having one end portion tubular, a pawl and a mount-- ing therefor on the end of said portion, a

forming the fixed trunnion of the shade roller, andalso a ratchet to coact with the pawl, and a torsion springin said end 'portion of the barrel connected at itsfend portions to the spindle and barrel.

3. In combination, the barrel having one end portion tubular, a pawl and a mounting therefor on the end of said portion, a

. spindle extending into said tubular portion and formed of a length of wire having its inner end portion bent into a loop forming a bearing and having bearing contact with the interior surface of said tubularend portion of the barrel, the outer end portion of said wire forming the fixed trunnion of the shade roller and also having a ratchet to coact wlth said pawl, and a torslon spring 1n said end portion of the barrel connected at f its end portions to the spindle and barrel.

7 it. In combination, the barrel having one end portion tubular, a pawl and a mounting therefor on the end of said portion, a spindle extending into said tubular portion and having a fixed enlarged inner end portion forming a bearing andhaving bearing contact with the interior surface'of said tubular end portion of the barrel, the outer end portion of said spindle forming the fixed trunnion of the shade roller and also having a ratchet to coact with the pawl, and a torsion spring in said end portion of the barrel connected at its end portions to the spindle and bar-rel.

5. In combination, the barrel having one end portion tubular, a pawl and a mounting therefor on the end of said portion, a spindle having the fixed trunnion of the shade roller and also a ratchet to coact with the pawl and extending into said end portion of the barrel, a torsion, spring in said end portion attached at itsinner end portion to the spindle, and means to secure the outer end portion of the spring to the outer end of said barrel. 7

6. In combination, the barrel having one end portion tubular, a pawl and a mounting therefor on the end of said portion, a

WILLIAM C. FISCHER. 

